feat: fixes (#228)

* feat: user login names

* fix: user login names

* fix: generate login name

pkg/management/api/grpc/iam.go

@@ -0,0 +1,14 @@
+package grpc
+
+import (
+	"context"
+	"github.com/golang/protobuf/ptypes/empty"
+)
+
+func (s *Server) GetIam(ctx context.Context, _ *empty.Empty) (*Iam, error) {
+	iam, err := s.iam.IamByID(ctx, s.systemDefaults.IamID)
+	if err != nil {
+		return nil, err
+	}
+	return iamFromModel(iam), nil
+}